This spider, perhaps in the Neoscona species, has not been named despite help from two college professors. This is one of three uploaded views, from different angles. It made a huge web (4'x3') in two different places in my yard; always starting late in the evening, around 9:30 pm. The abdomen(?) alone is the size of a quarter and is almost lime green in color. When viewed from the back, the body looks like a praying mantis head as it has two protrusions on its "shoulders" which look like eyes.